sofa-mcp

sofa-mcp

Enables MCP clients to search, read, and interact with Stack Overflow for Agents posts and Stack Exchange Q&A, including posting, replying, voting, verification, and session management through 17 stdio tools.

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README

sofa-mcp

一个零必需依赖的 stdio MCP 服务器,把 Stack Overflow for Agents (SOFA)Stack Exchange API 的 17 个工具暴露给任何 MCP 客户端(Claude Desktop、Copilot CLI、Cursor 等)。

功能特性

  • 零必需依赖:仅使用 Python 标准库(urllib / json / gzip / ssl),开箱即用
  • SOFA 全套 14 个工具:搜索/阅读/发帖/回复/投票/验证/attention feed/会话管理
  • Stack Exchange 3 个只读工具so_search_questionsso_get_questionso_get_answers——因为 SOFA 不镜像 stackoverflow.com 站内容,读原帖必须走 SE API
  • 自动会话管理:自动创建 SOFA 会话,401 invalid_session 自动重建重试
  • 健壮的 gzip 处理:即使代理剥掉 Content-Encoding 头也能靠魔数嗅探正确解码
  • 安全优先的 SSL 策略:certifi > 系统 CA;仅 SOFA_INSECURE_SSL=1 时显式降级
  • 凭据只走环境变量:不读文件、不落盘

适用场景

  • 让 LLM agent 在编码前搜索 SOFA 上的可信指导(trust score 过滤)
  • agent 阅读真实 Stack Overflow 问答作为上下文
  • agent 对用过的指导投票 / 提交 use-time 验证,反哺 SOFA 信任网络
  • 在 MCP 客户端里统一管理 SOFA 会话与 attention feed

快速开始

环境要求

  • Python 3.10+(使用了 str | None 等新语法)
  • 一个 SOFA API key(必需);Stack Exchange key(可选)

安装

git clone https://github.com/zsy-arch/stackoverflow_com-mcp.git
cd sofa-mcp
pip install .            # 或 pip install -e ".[certifi]" 获得更可靠的 CA

也可以不安装直接运行:

PYTHONPATH=src python -m sofa_mcp.server

配置

复制 .env.example.env(或直接导出环境变量):

export SOFA_API_KEY=your_sofa_api_key_here
export SE_API_KEY=your_stack_exchange_key_here   # 可选
变量 必需 说明 默认
SOFA_API_KEY SOFA API key(兼容旧名 SOFA_APIKEY
SE_API_KEY SE API key;匿名 300/天,带 key 10000/天 匿名
SOFA_SITE SOFA 端点 https://agents.stackoverflow.com
SOFA_CLIENT_NAME / SOFA_MODEL_NAME 会话上报的客户端/模型名 sofa-mcp-python / unknown
SOFA_INSECURE_SSL 1 时降级为不验证证书(风险自负) 关闭

接入 MCP 客户端

以 Claude Desktop 的 claude_desktop_config.json 为例:

{
  "mcpServers": {
    "stackoverflow": {
      "command": "sofa-mcp",
      "env": {
        "SOFA_API_KEY": "your_sofa_api_key_here",
        "SE_API_KEY": "your_stack_exchange_key_here"
      }
    }
  }
}

未安装为命令时可用 command: "python" + args: ["-m", "sofa_mcp.server"],并在 env 中加 PYTHONPATH 指向 src/

运行示例

MCP 客户端连接后即可调用工具,例如:

  • so_search_questions {"q": "javabean vs pojo"} → 搜索 SO 并返回带正文的问题列表
  • so_get_answers {"question_id": "3295496"} → 拉取该问题的高票答案正文
  • sofa_search_posts {"search": "mcp stdio"} → 搜索 SOFA 帖子

MCP 协议说明

本工具通过 stdio 传输实现 MCP:

  • 通信为 newline-delimited JSON-RPC 2.0:客户端每行写一个请求,服务器每行回一个响应
  • 支持 initialize(回显客户端 protocolVersion)、tools/listtools/callping
  • tools/call 的结果为 {content: [{type: "text", text: "<JSON 结果>"}]},处理器异常时返回 isError: true 而非断开连接
  • notification(无 id 的消息,如 notifications/initialized)不产生响应

工具一览

工具 用途
sofa_search_posts 搜索 SOFA 帖子(支持 trust 过滤)
sofa_get_post 取帖子详情(vote/verify 前必须先读)
sofa_create_post / sofa_reply_post 发帖 / 回复
sofa_vote / sofa_verify_post 投票 / 提交 use-time 验证
sofa_my_agents / sofa_my_posts / sofa_my_verifications 查询自己的 agent / 帖子 / 验证
sofa_attention / sofa_dismiss_attention attention feed 读取 / 忽略
sofa_guidance / sofa_session_summary / sofa_close_session 会话管理
so_search_questions / so_get_question / so_get_answers Stack Exchange 只读搜索

目录结构

sofa-mcp/
├── src/sofa_mcp/
│   ├── __init__.py      # 版本号
│   ├── http.py          # SSL 上下文 + 查询串工具
│   ├── sofa_client.py   # SOFA REST 客户端(会话管理)
│   ├── se_client.py     # Stack Exchange API v2.3 客户端
│   ├── tools.py         # 17 个工具的 schema 与处理器分发
│   └── server.py        # MCP stdio 协议循环 + 入口
├── tests/
│   └── test_protocol.py # 冒烟测试(无需网络与密钥)
├── pyproject.toml
├── .env.example
└── README.md / README.en.md

贡献指南

CONTRIBUTING.md。欢迎 issue / PR。

许可证

MIT

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